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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_WIN_SCOPED_COMPTR_H_ | 5 #ifndef BASE_WIN_SCOPED_COMPTR_H_ |
6 #define BASE_WIN_SCOPED_COMPTR_H_ | 6 #define BASE_WIN_SCOPED_COMPTR_H_ |
7 | 7 |
8 #include <objbase.h> | 8 #include <objbase.h> |
9 #include <unknwn.h> | 9 #include <unknwn.h> |
10 | 10 |
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109 return ptr_->QueryInterface(IID_PPV_ARGS(p)); | 109 return ptr_->QueryInterface(IID_PPV_ARGS(p)); |
110 } | 110 } |
111 | 111 |
112 // QI for times when the IID is not associated with the type. | 112 // QI for times when the IID is not associated with the type. |
113 HRESULT CopyTo(const IID& iid, void** obj) { | 113 HRESULT CopyTo(const IID& iid, void** obj) { |
114 DCHECK(obj); | 114 DCHECK(obj); |
115 DCHECK(ptr_); | 115 DCHECK(ptr_); |
116 return ptr_->QueryInterface(iid, obj); | 116 return ptr_->QueryInterface(iid, obj); |
117 } | 117 } |
118 | 118 |
119 // Queries |other| for the interface this object wraps and returns the | |
120 // error code from the other->QueryInterface operation. | |
121 HRESULT QueryFrom(IUnknown* object) { | |
122 DCHECK(object); | |
123 return object->QueryInterface(IID_PPV_ARGS(GetAddressOf())); | |
124 } | |
125 | |
126 // Convenience wrapper around CoCreateInstance | 119 // Convenience wrapper around CoCreateInstance |
127 HRESULT CreateInstance(const CLSID& clsid, | 120 HRESULT CreateInstance(const CLSID& clsid, |
128 IUnknown* outer = nullptr, | 121 IUnknown* outer = nullptr, |
129 DWORD context = CLSCTX_ALL) { | 122 DWORD context = CLSCTX_ALL) { |
130 DCHECK(!ptr_); | 123 DCHECK(!ptr_); |
131 HRESULT hr = ::CoCreateInstance(clsid, outer, context, *interface_id, | 124 HRESULT hr = ::CoCreateInstance(clsid, outer, context, *interface_id, |
132 reinterpret_cast<void**>(&ptr_)); | 125 reinterpret_cast<void**>(&ptr_)); |
133 return hr; | 126 return hr; |
134 } | 127 } |
135 | 128 |
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277 // Helper to make IID_PPV_ARGS work with ScopedComPtr. | 270 // Helper to make IID_PPV_ARGS work with ScopedComPtr. |
278 template <typename T> | 271 template <typename T> |
279 void** IID_PPV_ARGS_Helper(base::win::details::ScopedComPtrRef<T> pp) throw() { | 272 void** IID_PPV_ARGS_Helper(base::win::details::ScopedComPtrRef<T> pp) throw() { |
280 return pp; | 273 return pp; |
281 } | 274 } |
282 | 275 |
283 } // namespace win | 276 } // namespace win |
284 } // namespace base | 277 } // namespace base |
285 | 278 |
286 #endif // BASE_WIN_SCOPED_COMPTR_H_ | 279 #endif // BASE_WIN_SCOPED_COMPTR_H_ |
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